FR1462624A - Telescopic mine prop with hydraulic movement and friction lock - Google Patents

Telescopic mine prop with hydraulic movement and friction lock

Info

Publication number
FR1462624A
FR1462624A FR44275A FR44275A FR1462624A FR 1462624 A FR1462624 A FR 1462624A FR 44275 A FR44275 A FR 44275A FR 44275 A FR44275 A FR 44275A FR 1462624 A FR1462624 A FR 1462624A
Authority
FR
France
Prior art keywords
friction lock
hydraulic movement
mine prop
telescopic
telescopic mine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR44275A
Other languages
French (fr)
Inventor
Karl Gerlach
Hans Gerlach
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR1462624A publication Critical patent/FR1462624A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/15—Means counteracting entry of dirt; Built-in cleaning devices
    • E21D15/155—Built-in cleaning devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Clamps And Clips (AREA)
  • Actuator (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
FR44275A 1964-12-31 1965-12-30 Telescopic mine prop with hydraulic movement and friction lock Expired FR1462624A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG42447A DE1227409B (en) 1964-12-31 1964-12-31 Hydraulically extendable and friction-locked telescopic pit ram

Publications (1)

Publication Number Publication Date
FR1462624A true FR1462624A (en) 1966-12-16

Family

ID=7126933

Family Applications (1)

Application Number Title Priority Date Filing Date
FR44275A Expired FR1462624A (en) 1964-12-31 1965-12-30 Telescopic mine prop with hydraulic movement and friction lock

Country Status (3)

Country Link
DE (1) DE1227409B (en)
FR (1) FR1462624A (en)
GB (1) GB1127620A (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1090612B (en) * 1956-03-24 1960-10-13 Ewald Wiemann Maschf Profile for pit stamp
GB848229A (en) * 1957-08-06 1960-09-14 Dowty Mining Equipment Ltd Improvements in and relating to hydraulic pit props
BE630020A (en) * 1963-03-25

Also Published As

Publication number Publication date
DE1227409B (en) 1966-10-27
GB1127620A (en) 1968-09-18

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